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Fig. 8.

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SNR S147. This is a full resolution background-corrected mosaic made from the Hα-filter data (no r subtraction). Approximate image dimensions are 4.2 × 3.6 sq. deg. North is up, and east is to the left. The grey scale is negative such that the brightest emission is darkest. Compared to the earlier mosaic appearing as Fig. 19 in Drew et al. (2005), based on Hα − r data, with background fitting and removal, there are fewer artefacts thanks in large part to the incorporation of better re-observations. Much of the faint structure left, such as the ragged diffuse emission in and below the centre of the remnant, is real.

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